Lever-chocking device



0. 'C. GOULET. LEVER CHOCKING DEVICE. APPLICATION FILED DEC. I9. I9l8- RENEWED NOV. 15, 19 19. 1,329,079.

Patented Jan. 27, I920,

UNITED STATES PATENT oFFIoE.

OMER C. GOULET, OF FALL RIVER, MASSACHUSETTS, ASSIGNOR TO DELPHINE GOULET, 0]? FALL RIVER, MASSACHUSETTS.

LEVER-CHOCKING DEVICE.

Specification of Letters Patent.

Patented J an. 27, 1920.

Application filed December 19, 1918, Serial No. 267,493. Renewed November 15, 1919. Serial No. 338,327.

To all whom it may concern:

Be it known that I, OMER C. GOULET, a citizen of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in LeverCho cking Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to chocking devices, and it more specifically relates to an improved automatic lever-chocking devlce.

The main object of this invention is to prevent accidental injury to persons and property, such as sometimes results from machinery belts being accldentallyor 1nadvertently thrown on at the wrong time- A further object is to provide a device which securely locks the belt shifting lever in its off position, that is, the position to hold the belt on an idler;

Another object is to provide a simple and effective form of chock that is applicable to levers of various kinds and sizes and in various relations;

Another object is to provide a device of this character which is simple of construction and may be quickly and easily applied to machines of various kinds;

Another object is to provide a device of thi character which is strong, durable and capable of being manufactured at low cost.

Other objects and advantages may become apparent to persons whoread the following details of description'ln connection with the accompanying drawlngs in which Figure 1 is a perspective view illustrating my invention applied to a folding machine of well known construction;

Fig. 2 is a side elevation of the device, its adjuncts being shown in section; and,

Fig. 3 is a view somewhat similar to Fig. 2, but the parts being shifted to a different position.

Referring to these drawings in detail, in which similar reference characters correspond with similar parts throughout the several views. the machine frame 5, tight and loose pulleys 6 and 7 respectively, belt '8, shifting rod 9, and the elements which are not designated by a reference character are of ordinary construction, and, therefore, are not described in detail.

A stud or support 10 extends outward from the vertical surface of the frame 5, and a shifting lever 11 is pivoted thereto at 1:2. This lever has one arm extending through a slot 13 in the shifting rod 9, and a handle 14 is provided at the other end of this lever. A chock 15 is pivotally mounted on the lever 11 at 16, and this chock is formed with a finger-piece 17, a cam surface 18 and a foot 19. The finger-piece 17 is formed, in the present instance, by providing a hole 20 through the chock so that a finger or thumb of the user or operator may be inserted through this hole and thus obtain a secure en agement of the finger or thumb with the finger-piece or manipulative element 17. It will be seen, therefore, that the chock may be held in the position shown in Fig. 3 by means of the hand which holds the handle 14, and that upon releasing the handle 14 and element 17, the chock will tend to fall by gravity until its foot 19 is stopped by the support 10 as shown in Figs. 1 and 2, and that when in this position, the lever 11 is efl'ectually locked or chocked against movement so long as the chock remains in its inoperative position. Therefore, when the lever let is shifted, to throw the belt onto the loose pulley 7, the chock secures the shifting mechanism in this position until said chock is raised out of engagement with. the abutment which is formed by the adjacent surface of the frame 5.

In order that this device may operate positively and unfailingly, a spring 21 is provided, one end of this spring being secured to the pivot on which the lever 11 is mounted. Therefore, when the element 17 vis released; and the handle of lever 1 1 swung outward, the spring 21 draws the convexed surface 18 against the frame 5 and holds the end 18 of the chock out of sliding contact with the frame until the end 18' finally comes into its effective position, thereby minimizing the wear on said end and prolonging its maximum efliciency.

Although I have described this embodiment of my invention very specifically, it is not intended to limit my invention to these exact details of construction and arrangement of parts, but I am entitled to make changes within the scope of the inventive idea disclosed in the foregoing description. and following claims.

What I claim as my invention is:

1. The combination of a machine frame having a substantially vertical surface, a support extending horizontally outward from said surface, a lever pivoted on said Support and'having one arm extending substantially parallel with said surface, and a chock pivoted to said arm for movement from and against said support, said chock being substantially disposed between said arm and surface when it is against said support and vthus being effective to prevent movement of saidlever toward said support. 2. In combination with the main frame of a machine, a support extending out from a surface of said main frame, and a controlling lever having a handle and being fulcrumed on said support; a chock formed with a finger-engaging element and being pivotally mounted on said lever adjacent to said handle so that the hand of an operator may concomitantly grasp both the handle and finger-piece and thereby retain said chock out of contact with said frame while shifting the lever, and elastic means to force said chock againstssaid main frame when said finger-piece is released and combine with the main frame to retain said lever in a predetermined position.

In testimony whereof I have hereunto setmy hand.

OMER C. GOULET. 

